servomech acme screw jacks

Screw jacks

INDEX

1. General Screwjacksoverview................................................................................................. page 2 Manufacturingfeatures............................................................................................... page 2 Materialsandcomponents......................................................................................... page 3 Acmescrewjackssummary....................................................................................... page 4 Ballscrewjackssummary.......................................................................................... page 5 Models....................................................................................................................... page 6 Versions..................................................................................................................... page 7 Screwjacksselectioncriteria...................................................................................... page 8 Self-lockingconditions............................................................................................... page 12 Acmescrewbuckling................................................................................................. page 13 Criticalrotatingspeedofacmescrew......................................................................... page 16

2. MA Series screw jacks Structuralelements..................................................................................................... page 18 MASeriesscrewjackswith1-startacmescrew-technicalspecifications.................. page 20 MASeriesscrewjackswith1-startacmescrew-performances................................ page 22 MASeriesscrewjackswith2-startsacmescrew-technicalspecifications................ page 24 MASeriesscrewjackswith2-startsacmescrew-performances............................... page 26 MASeriesscrewjackswith3-startsacmescrew-technicalspecifications................ page 28 MASeriesscrewjackswith3-startsacmescrew-performances............................... page 29 MASeriesscrewjackswith4-startsacmescrew-technicalspecifications................ page 31 MASeriesscrewjackswith4-startsacmescrew-performances............................... page 32 Overalldimensions..................................................................................................... page 34 Efficiency.................................................................................................................... page 36 Options...................................................................................................................... page 37 MASeriesscrewjacks-travellingscrew(Mod.A)-codingdescription....................... page 48 MASeriesscrewjacks-travellingnut(Mod.B)-codingdescription............................ page 50 MASeriesscrewjacks-travellingscrew(Mod.A)-spareparts................................... page 52 MASeriesscrewjacks-travellingnut(Mod.B)-spareparts....................................... page 53

3. SJ Series screw jacks Structuralelements..................................................................................................... page 54 SJSeriesscrewjackswith1-startacmescrew-technicalspecifications................... page 56 SJSeriesscrewjackswith1-startacmescrew-performances.................................. page 58 SJSeriesscrewjackswith1-startacmescrew-efficiency......................................... page 61 SJSeriesscrewjackswith2-startsacmescrew-technicalspecifications.................. page 62 SJSeriesscrewjackswith2-startsacmescrew-performances................................ page 64 SJSeriesscrewjackswith2-startsacmescrew-efficiency....................................... page 67 Overalldimensions..................................................................................................... page 68 Options...................................................................................................................... page 72 SJSeriesscrewjacks-travellingscrew(Mod.A)-codingdescription......................... page 80 SJSeriesscrewjacks-travellingnut(Mod.B)-codingdescription............................. page 82 SJSeriesscrewjacks-travellingscrew(Mod.A)-spareparts.................................... page 84 SJSeriesscrewjacks-travellingnut(Mod.B)-spareparts........................................ page 85

4. InstallationMaintenance-Lubricants....................................................................... page 86 Productlabel.............................................................................................................. page 87 Screwjacks-travellingscrew(Mod.A)-selectionform............................................... page 88 Screwjacks-travellingnut(Mod.B)-selectionform................................................... page 90 Screwjackdimensionschecksheet........................................................................... page 92 Screwjackliftingsystems,lay-out.............................................................................. page 94

2

1

Screw jacks

Screw jacks overviewScrew jacks transform a rotary motion from an electric, hydraulic or pneumatic motor or even manual operation into a linear movement in a vertical (push-pull lifting) or horizontal position.Screw jacks can be installed as a single unit or in lifting systems with different layouts connected by drive-shafts, couplings and bevel gearboxes. Screw jacks enable the synchronized constant movement of lifting systems even with a varying load.SERVOMECH screw jacks are able to work under either push or pull load conditions and mounted verti-cally upward, downward or horizontally.SERVOMECH screw jacks models are available in two models:

travelling screw (Model A) travelling nut (Model B)

SERVOMECH produces two screw jacks series: MA and SJ. Both series are available in different sizes in order to obtain the most suitable size in terms of performances and costs for each application.MA Series: high performances, acme screw, oil lubricated, high efficiency, increased duty cycle up to 40% over a 10 minute period or 30% over a 1 hour period at 25C environment temperature.SJ Series: standard performances, acme screw, grease lubricated, increased duty cycle up to 30% over a 10 minute period or 20% over a 1 hour period at 25C environment temperatureMA BS Series: travelling ball screw (Mod.A) or ball screw with travelling nut (Mod.B), oil lubricated, high performances and efficiency, increased duty cycle up to 100% at 25C environment temperature.SJ BS Series: ball screw with travelling nut (Mod.B), grease lubricated, increased duty cycle up to 70% at 25C environment temperature.

Manufacturing featuresSERVOMECH screw jacks are totally designed and manufactured inside the company with high techno-logy and CNC machinery.Quality System according to ISO 9001:2008, certified by TV.Control tests are carried out in-line during manufacturing processes to monitor the production quality. Final control and functional check test are carried out to ensure the total quality and reliability of the final product.Input drive: worm gear, high efficiency design, ZI involute profile, reduced axial backlash; bronze helical wormwheel EN 1982 CuSn12-C; true involute worm in steel 20 MnCr 5 (UNI EN 10084), with hardened and ground thread and shaft.Housing: monobloc housing designed for a more compact and robust shape, able to carry heavy loads and ensure a high precision level of machining. High resistance materials are used:

casting in lluminium alloy EN 1706 - AC-AlSi10Mg T6 casting in cast iron EN-GJL-250 (UNI EN 1561) casting in spheroidal graphite iron EN-GJS-500-7 (UNI EN 1563) casting in steel Fe G 60 (UNI 4010)

3

1

Screw jacks

Materials and components

Acme screws, profile according to ISO 2901 ... ISO 2904material: steel C 43 (UNI 7847)subjected to straightening process to ensure the regular alignment in operationmax. pitch error 0.05 mm over 300 mm thread length

Threaded bars available on stock:

ROLLED

1 start Tr 184 Tr 225 Tr 306 Tr 407 Tr 559 Tr 6012 Tr 7012 Tr 8012

2 starts Tr 188 (P4) Tr 2210 (P5) Tr 3012 (P6) Tr 4014 (P7)

WHIRLED

1 startTr 306 Tr 407 Tr 559 Tr 6012 Tr 7012 Tr 8012

Tr 9012 Tr 10012 Tr 10016 Tr 12014 Tr 14014 Tr 16016

2 startsTr 3012 (P6) Tr 4014 (P7) Tr 5518 (P9) Tr 6024 (P12) Tr 7024 (P12) Tr 8024 (P12)

Tr 9024 (P12) Tr 10024 (P12) Tr 10032 (P16) Tr 12028 (P14) Tr 14028 (P14) Tr 16032 (P16)

3 starts Tr 3018 (P6) Tr 4021 (P7) Tr 5527 (P9) Tr 6036 (P12) Tr 7036 (P12) Tr 10048 (P16)

4 starts Tr 3024 (P6) Tr 4028 (P7) Tr 5536 (P9) Tr 6048 (P12) Tr 7048 (P12) Tr 10064 (P16)

Bronze travelling nut , profile according to ISO 2901 ... ISO 2904material: bronze nut with 1-start thread bronze EN 1982 - CuAl9-C bronze nut with multiple starts thread bronze EN 1982 - CuSn12-Cmax. axial backlash with new travelling nut: (0.10 ... 0.12) mm

Ball screwsmaterial: steel 42 CrMo 4 or 50 CrMo 4 (UNI EN 10083)

Threaded bars available on stock:

ROLLED, accuracy grade IT 7

BS 145 BS 165 BS 205 BS 255 BS 325 BS 4010

BS 1410 BS 256 BS 3210 BS 4020

BS 2510 BS 3220 BS 4040

WHIRLED, accuracy grade IT 3 - IT 5

BS 205 BS 256 BS 3210 BS 4010 BS 5010 BS 6310 BS 8016 BS 10016

BS 2020 BS 2510 BS 3220 BS 4020 BS 5020 BS 6320

BS 3232 BS 4040

Ball nuts with flange DIN 69051 or with cylindrical flangematerial: steel 18 NiCrMo 5 (UNI EN 10084)

Ball nuts with ZERO backlash or preloaded

Threaded shafts with machined ends and nuts at customers drawing available on request.

4

1

Acme screw jacks

SERVOMECH acme screw jacks

MA Series SJ Series



MA 5 Tr 18 4 SJ 5 Tr 18 4MA 10 Tr 22 5 SJ 10 Tr 22 5MA 25 Tr 30 6 SJ 25 Tr 30 6MA 50 Tr 40 7 SJ 50 Tr 40 7MA 80 Tr 55 9 SJ 100 Tr 55 9MA 100 Tr 60 12 SJ 150 Tr 60 12MA 200 Tr 70 12 SJ 200 Tr 70 12MA 350 Tr 100 16 SJ 250 Tr 80 12

SJ 300 Tr 90 12SJ 350 Tr 100 12SJ 400 Tr 100 12SJ 600 Tr 120 14SJ 800 Tr 140 14SJ 1000 Tr 160 16

MA Series: high efficiency screw jacks

SJ Series: standard performances screw jacks

8 standard sizes with load capacity from 5 kN to 350 kN

14 standard sizes with load capacity from 5 kN to 1 000 kN

Model A: travelling screw Model B: travelling nut

1- start acme screw from Tr 18 4 to Tr 100 16

1- start acme screw from Tr 18 4 to Tr 160 16

2-starts acme screw from Tr 18 8 (P4) to Tr 100 32 (P16)

2-starts acme screw from Tr 18 8 (P4) to Tr 160 32 (P16)

Screw jacks MA Series Model A with travelling screw: 3- or 4-starts acme screws available

6 different input versions for each size and ratio Vers.1: single input shaft

Vers.2: double free input shaft Vers.3: flange and hollow shaft input for IEC motor

Vers.4: flange and hollow shaft input for IEC motor with second free input shaft Vers.5: Vers.1 + bell housing and coupling for IEC motor Vers.6: Vers.2 + bell housing and coupling for IEC motor

long-life synthetic oil lubricated worm gear long-life synthetic grease lubricated worm gearoperation with low noise level

with input speed up to 3 000 rpmmax. input speed allowed

1 500 rpmsuitable for high linear speed

and high duty cycle applicationscompetitive in industrial applications price/performance : excellent ratio

wide range of accessories available

Screw jacks

5

1

Ball screw jacks

SERVOMECH ball screw jacks

MA BS Series SJ BS Series

travelling ball screw (Model A) travelling ball nut (Model B) travelling ball nut (Model B)

MA 5BS 145 BS 165

MA 5BS 205 BS 256

SJ 5BS 205 BS 256

MA 10BS 165 BS 205

MA 10BS 256 BS 325

SJ 10BS 256 BS 325

MA 25BS 3210; BS 3220; BS 3232

MA 25BS 325; BS 3210; BS 3220; BS 3232

SJ 25BS 325; BS 3210; BS 3220

MA 50BS 4010; BS 4020; BS 4040

MA 50BS 4010; BS 4020; BS 4040

SJ 50 BS 4010; BS 4020

MA 80 BS 5010; BS 5020 SJ 100 BS 5010; BS 5020

MA 100BS 5010; BS 5020; BS 6310; BS 6320

MA 100 BS 6310; BS 6320 SJ 150 BS 6310; BS 6320

MA 200 BS 8016 MA 200BS 8016 BS 10016

SJ 200 BS 8016

MA 350 BS 10016 MA 350 BS 10016 SJ 250 BS 10016

MA BS Series: SJ BS Series:

high efficiency screw jacks, suitable for continuous operation also,

duty cycle up to 100 %, input speed up to 3 000 rpm

standard performances screw jacks, Model B (travelling nut) available only,

duty cycle up to 70 %, input speed up to 1 500 rpm



Model A: travelling ball screw Model B: travelling ball nut

Model B: travelling ball nut

ball screw from BS 14 5 to BS 100 16

ball screw from BS 20 5 to BS 100 16

6 different input versions for each size and ratio Vers.1: single input shaft

Vers.2: double free input shaft Vers.3: flange and hollow shaft input for IEC motor

Vers.4: flange and hollow shaft input for IEC motor with second free input shaft Vers.5: Vers.1 + bell housing and coupling for IEC motor Vers.6: Vers.2 + bell housing and coupling for IEC motor

long-life synthetic oil lubricated worm gear long-life synthetic grease lubricated worm gearwide range of accessories available

NOTE: Performances, features and dimensions of ball screw jacks and ball screws are quoted in the specific catalogues: catalogue Ball screw jacks, catalogue Ball screws and nuts.

Screw jacks

6

1

ModelsBoth MA and SJ Series screw jacks are available in two models:

with travelling screw (Model A)with travelling nut (Model B)

The choice of the model depends on the configuration and requirements of the application. The perfor-mances are in general the same for both models.SERVOMECH screw jacks can be operated in vertical or horizontal planes, or angles in-between. Input options available: free shaft, double free shaft, motor flange with or without second shaft.

travelling ball screw (Model A) travelling ball nut (Model B)

The bronze nut is integral with the worm wheel.The linear motion is given by the acme screw be-ing driven through the centre of the worm wheel. In operation, the screw does not rotate. Space must be available on both screw jacks sides for the screw to protrude below the gear housing.

Options: protective tube protective bellows safety bronze nut various screw end fixings stroke end switches anti-turn device wear indicator switch adjustable backlash stop nut trunnion mounting stainless steel acme screw bronze guides

The acme screw is fixed to the worm wheel. In operation the screw rotates with the worm wheel at the same speed, driving the bronze nut up and down. The linear motion of the nut is possible only if the reacting torque is applied, avoiding the integral rotation with the acme screw.

Options: protective bellows safety bronze nut wear indicator switch adjustable backlash stainless steel acme screw trunnion mounting travelling nut travelling nut at customers drawing

Screw jacks

7

1

VersionsINPUT SHAFT ROTATION SCREW OR NUT LIFTING DIRECTION

INPUT VERSIONSVers.1 Vers.2 Vers.3 Vers.4 Vers.5 Vers.6

Vers.1: single input shaftVers.2: double free input shaftVers.3: flange and hollow shaft input for IEC motorVers.4: flange and hollow shaft input for IEC motor with second free input shaftVers.5: Vers.1 + bell housing and coupling for IEC motorVers.6: Vers.2 + bell housing and coupling for IEC motor

SCREW JACK MOUNTING POSITIONS

Model A Model B

UPWARD (U) DOWNWARD (D) HORIZONTAL (H)

LEFT-HAND (LH) RIGHT-HAND (RH) LEFT-HAND (LH) RIGHT-HAND (RH) LEFT-HAND (LH)

RIGHT-HAND (RH)

Screw jacks

8

P1

/ P1m

ax

55C][ T80

fT

=

1

Screw jacks selection criteriaScrew jacks transform a rotary movement into a linear movement. Due to the screw-nut efficiency, this transformation implies a loss of energy depending on the screw and the nut type which is in inverse rela-tion to their efficiency. Therefore, the energy loss is higher with 1-start acme screw and nut when compared with 2- or more starts acme screw and nut.Therefore to select the right screw jack suitable for an application, it is necessary to consider the duty cycle required by the application Fu [%] and compare it to the duty cycle that the screw jack can perform Fi [%].The application duty cycle Fu [%] required is the ratio between the working time under load required by the application during a reference time period and the reference time period itself, expressed in percentage.

Trif - reference time period, expressed in minutes:Tref = 10 minutes for short, but frequent working cyclesTref = 1 hour (60 min) for long, but infrequent working cycles

The screw jack duty cycle Fi [%] allowed is the percentage of time referred to the reference time period Tref during which the screw jack can operate under maximum load conditions - stated in this catalogue - at 25C environment temperature, to avoid the risk of internal parts overheating. Therefore, the main limit to the working time of screw jacks is often due to the thermal power limits and not to the maximum permis-sible operating mechanical power.The screw jack duty cycle Fi [%] is related to the maximum permissible power. If the power required by the application is lower than the maximum permissible power, than the screw jack can be used with a higher duty cycle.

P1 - Power required by the applicationP1max - Screw jacks max permissible power (see performances tables)

If the environment temperature is higher than 25C, the screw jack duty cycle Fi [%] has to be reduced by applying a correction factor fT as per the following formula:

where: T [C] - environment temperature, expressed in degree Celsius

If the environment temperature increases, the permissible duty cycle of the screw jack Fi [%] is reduced.

MA Series

SJ Series

Screw jack duty cycle [%] over 10 min

Screw jacks

100[min] T period time Reference

[min] T period time reference during time Working[%] F

rif

rifu =

9

1

In order to make a correct screw jack selection, we recommend the following selection procedure:1. Model:

- Model A travelling screw- Model B travelling nut

2. SERVOMECH screw jack series:- MA Series: high efficiency screw jack with acme screw, oil lubricated- SJ Series: standard performances screw jack with acme screw, grease lubricated

3. Screw jack size:- Pull or push load- Stroke- Linear speed- Power required

4. Input version:- Vers.1: single free input shaft- Vers.2: double free input shaft- Vers.3: flange and hollow shaft input for IEC motor- Vers.4: flange and hollow shaft input for IEC motor with second free input shaft- Vers.5: Vers.1 + bell housing and coupling for IEC motor- Vers.6: Vers.2 + bell housing and coupling for IEC motor

5. Screw jack mounting position:- Upward U- Downward D- Horizontal H- Right-hand RH- Left-hand LH

6. Accessories required

Screw jack selectionThe screw jack selection is the last step of a more complex global lifting-system selection procedure, where the overall dimensions and safety requirements of the application have to be considered as an inte-gral part of that selection. In this section we only focus on a single screw jack selection. You will find more exhaustive comments and recommendations on the screw jacks complete lifting system chapter.1. Screw jack model selection: all SERVOMECH screw jacks versions and sizes are available in two different models:- Model A travelling screw- Model B travelling nutThe choice between the two different models only depends on the configuration and mounting details of the application.In case of Model B (rotating screw and external translating nut) selection, we recommend to pay attention to the following:

- screw and nut lubrication- acme screw protection- only axial load can be applied on the translating nut referred to the rotating acme screw axis- rotating screw end, especially in case of long stroke length and push load- off-set or radial load applied on the nut may lead to dangerous misalignment between screw and

nut, so it is not permitted. If present, it must be supported by an appropriate, suitable solution.

Screw jacks

10

1

2. SERVOMECH screw jacks series:The screw jacks duty cycle and the duty cycle required by the application Fu [%] are the most important factors in choosing between the two available screw jacks series, as previously described.The duty cycle required by the application Fu [%] has to be lower than or equal to the working duty cycle rating the screw jack can perform Fi [%], inclusive the environment temperature correction factor (fT):

Fu [%] Fi [%]

Here below are values of the max. duty cycle Fi [%] at 25C environment temperature for the SERVOMECH screw jacks series:

Duty cycle allowed Fi [%] MA Series SJ Series

Fi [%] over 10 min time period 40 % 30 %

Fi [%] over 1 hour time period 30 % 20 %

Lifting SystemsUsually, a screw jack lifting system is composed of several lifting points (see examples on pages 94 - 95).Screw jacks position and number depend on application requirements as:

- dimension and surface of the platform or plane- required stroke length- total lifting load (dynamic load)- lifting system configuration, guided or not guided load

Furthermore, specific application project requirements may also influence the selection.A new lifting system project can be very complex and therefore it requires the clever evaluation of many different technical and application details, in order to provide a functional, safe and competitive solution.Here are some suggestions that can help the lifting systems designer on his project evaluations.Static safety: Firstly, the required or desired safety level has to be considered. On screw jack product, there are no regulations on the matter of safety standards and technical data declared on catalogue. Many manufacturers do not use the same safety factors on their technical calculations and also the materials may be different.We recommend a full evaluation of all screw jack components. Dimensions, outer diameter and lead of screw thread are not enough for a complete evaluation. It is also important to evaluate the worm gear in terms of:

- centre distance, overall dimensions and total weight- axial bearings: type and size- nut: material and dimensions

Norms and rules: In case, be sure to consider all norms and rules which the project must comply with. This can significantly affect the final solution.Noise and vibrations: For applications which require a low and controlled noise level, we recommend a solution which allows, with same final performances, a lower input speed for the connecting shaft.This will help to reduce or eliminate also vibrations or dangerous input speeds for the connecting shafts.

Screw jacks

11

1

Example: lifting stages for theatres, lecture or concert hall:- motor speed reduced to max. (300 ... 400) rpm- use of bevel gearboxes with ratio 1 : 1- balanced connecting shafts, well aligned and supported, max. non-supported length (2 ... 3) m- SERVOMECH screw jacks with ratio RV (high linear speed) and multiplied starts acme screw

Hanging load: Auxiliary safety nuts are available to comply with norms and rules about hanged loads with presence of personnel for maintenance.

Self-locking: Generally, the statically self-locking condition of the lifting system can be achieved by using a 1-start acme screw jack. Sometimes, to comply with some norms and rules, a certain mechanical self-locking condition can only be achieved by a lower than 4 helix angle acme screw with a lead smaller than the standard. Those special executions are available on request.

Positioning (stopping) accuracy: The positioning (stopping) accuracy can be achieved by using brake-motors or frequency inverters to control speed and acceleration and deceleration ramps, especially in case of downward moving loads.

Operating safety: Different safety devices can also be considered or requested for the application:- mechanical safety: safety nut, mechanical stop of the load;- electric or electronic safety: wear control of the working nut to check the distance between working

and safety nut; speed control of the connecting shaft; rotation detection of the worm wheel; control of max. power or current required for the lifting system.

Load inertia: If the load has to be rapidly accelerated or decelerated, in applications with high linear speed, we recommend to use an appropriate drive to control the acceleration and deceleration ramps (for example, frequency inverter for AC 3-phase motors or double polarity motors and soft-start devices).

Guided load: In case of applications with large dimensions, high loads and long strokes, we recommend to evaluate the possibility to guide the load.If the load is guided, a smaller screw diameter may be selected and consequently a cheaper screw jacks can be used, whilst maintaining the same functionality and static load capability.This means a cost effective final solution for the project.

Screw jacks with increased acme screw diameter, if the static resistance is more significant than the dynamic application conditions for lifting systems:

- long stroke with medium static push load- medium strokes with high static push load

SERVOMECH screw jacks with increased diameter acme screw are available to offer a more cost effective solution.

For assistance in selecting lifting systems and linear motion devices, SERVOMECH Engineering Dpt. is available to support you free of charge.

Screw jacks

12

1

Self-locking

An acme screw jack is in self-locking condition when: a push or pull load applied on a not working screw jack does not start the linear movement (static

self-locking condition); by interrupting the motor power supply of a working screw jack with push or pull load, the movement

stops (dynamic self-locking condition).

Self-locking and back-driving conditions are defined in the following 4 situations:

1) Static self-locking: not running screw jack without load vibrations; the application of a push or pull force (until the maximum allowed) does not cause the linear movement of the acme screw (Model A) or of the travelling bronze nut (Model B).

This condition happens when the direct efficiency value1) is lower than 0.30.

2) Dynamic self-locking:

Working screw jack with a load opposite the motion: by interrupting the motor power supply the screw jack stops.

This condition happens when the direct efficiency value1) is lower than 0.25.

Working screw jack with a load applied on the same direction of the motion: the screw jacks stop is not guaranteed by interrupting the motor power supply. The screw jack stops only if the direct efficiency value1) is lower than 0.20 and, anyway, it stops in an unrepeatable position.

In this case, we recommend to use a brake motor to stop the load and keep it in position, avoiding the motion start in case of pushes or vibrations.

3) Uncertain self-locking: with direct efficiency values1) between 0.30 and 0.50, the screw jacks are in an uncertain self-locking condition. The self-locking depends on the load and the inertia of the system.

In this case we recommend to use a brake motor to guarantee the self-locking condition or to contact SERVOMECH Engineering Dpt. to evaluate the application.

4) Back-driving: screw jacks with direct efficiency value1) higher than 0.50 are never self-locking. We remind you that, in any case, also to start a not self-locking screw jack a certain minimum load

must be applied. To define this load value please contact SERVOMECH Engineering Dpt.

SELF-LOCKINGUNCERTAIN

SELF-LOCKINGBACK-DRIVING

0 0.3 0.5 1

1) The direct efficiency values are shown in the relative tables (see pages 36, 61 and 67).

Screw jacks

13

10.1 0.2 0.3 0.4 0.5 0.8 1 3 4 5 6

Tr 7012

Tr 8012

Tr 9012

Tr 10016Tr 10012

Tr 12014

Tr 14014

Tr 16016

2

3

4

56789

10

200

300

400

500600700800900

1000

20

30

40

5060708090

100

Tr 184Tr 225

Tr 306

Tr 407

Tr 559Tr 6012

1

Acme screw bucklingOne of the most important screw jack selection criteria is the buckling resistance of the acme screw. Buckling limits are relevant for push load only.SERVOMECH considers three cases:

Euler I: screw jack housing firmly fixed to the base free travelling acme screw end screw jack housing firmly fixed to the base free travelling nut Euler II: screw jack housing and travelling acme screw end fixed to pivoting supports screw jack housing and travelling nut fixed to pivoting supports Euler III: screw jack housing firmly fixed to the base guided travelling acme screw end screw jack housing firmly fixed to the base guided travelling nut

Following diagrams (known as Euler curves) show the max. push load admitted on the acme screw, considering a safety factor against buckling equal to 4.For more accurate evaluation in case of particular application requirements, critical for safety reasons (e.g. theatre lifts), contact SERVOMECH Engineering Dpt.

Euler I: screw jack housing firmly fixed to the base - free travelling acme screw end screw jack housing firmly fixed to the base - free travelling nutExample: To suit a push load of 60 kN applied on an acme screw 1 000 mm long, the right screw size is Tr 7012 mounted on a screw jack MA 200 or SJ 200.

Acme screw length, L [m]

Load

[kN

]

Euler ISafety factor: 4

Screw jacks

14

Tr 7012

Tr 8012

Tr 9012

Tr 10016Tr 10012

Tr 12014

Tr 14014

Tr 16016

Tr 6012Tr 559

10.1 0.2 0.3 0.4 0.5 0.8 1 3 4 5 6

2

3

4

56789

10

200

300

400

500600700800900

1000

20

30

40

5060708090

100Tr 184Tr 225

Tr 306

Tr 407

1

Acme screw buckling

Euler II: screw jack housing and travelling acme screw end fixed to pivoting supports screw jack housing and travelling nut fixed to pivoting supportsExample: To suit a push load of 20 kN applied on an acme screw 1 000 mm long, the right screw size is Tr 407 mounted on a screw jack MA 50 or SJ 50.


Load

[kN

]

Euler IISafety factor: 4

Screw jacks

15

Tr 7012

Tr 8012

Tr 9012

Tr 10016Tr 10012

Tr 12014

Tr 14014

Tr 16016

Tr 6012Tr 559

Tr 407

10.1 0.2 0.3 0.4 0.5 0.8 1 3 4 5 6

2

3

4

56789

10

200

300

400

500600700800900

1000

20

30

40

5060708090

100

Tr 184Tr 225

Tr 306

1

Acme screw buckling

Euler III: screw jack housing firmly fixed to the base - guided travelling acme screw end screw jack housing firmly fixed to the base - guided travelling nutExample: To suit a push load of 100 kN applied on an acme screw 3 000 mm long, the right screw size is Tr 8012 mounted on a screw jack SJ 250.


Load

[kN

]

Euler IIISafety factor: 4

Screw jacks

16

60.6 0.7 0.8 0.9 1 21.5 2.5 3 3.5 4

500

600

700

800

900

100

150

200

300

350

400

450

250

4.5 5

1000

14131211987654321

10

1 - Tr 184 4 - Tr 407 7 - Tr 7012 10 - Tr 10016 13 - Tr 140142 - Tr 225 5 - Tr 559 8 - Tr 8012 11 - Tr 10012 14 - Tr 160163 - Tr 306 6 - Tr 6012 9 - Tr 9012 12 - Tr 12014

2min5

maxL

d9.010392n

=

1

Critical rotating speed of acme screwFor travelling nut (Model B) screw jacks, the acme screw rotating speed must not reach the first critical speed of the screw itself, which depends on the thread diameter and lead, screw length and type of the screw end support.

Free acme screw endExample: For a screw jack SJ 150 with acme screw Tr 6012 (1-start or more) 2 m long with free end, the max. allowed rotating speed is 420 rpm. With a 1-start thread, this rotating speed is equivalent to a linear speed of 85 mm/s.


Acm

e sc

rew

rot

atin

g sp

eed

[g/m

in]

dmin [mm] - min. thread diameter (for a thread Tr dP: dmin = d - P)L [mm] - acme screw length

Screw jacks

17

60.6 0.7 0.8 0.9 1 21.5 2.5 3 3.5 4

500

600

700

800

900

100

150

200

300

350

400

450

250

4.5 5

1000

14131211987654321

10

1 - Tr 184 4 - Tr 407 7 - Tr 7012 10 - Tr 10016 13 - Tr 140142 - Tr 225 5 - Tr 559 8 - Tr 8012 11 - Tr 10012 14 - Tr 160163 - Tr 306 6 - Tr 6012 9 - Tr 9012 12 - Tr 12014

2min5

maxL

d8.310392n

=

1


Acm

e sc

rew

rot

atin

g sp

eed

[g/m

in]

ATTENTION! In case of horizontal mounting, an acme screw static deflection, caused by its weight and possibly aggravated by the presence of the push load, should always be considered. Therefore, we recom-mend an accurate evaluation and use of a screw supporting system on two nut sides, integral and travel-ling with the nut itself; this will ensure the correct alignment and concentricity between the screw and the nut. In case of doubts, please contact SERVOMECH Engineering Dpt.

Supported acme screw endExample: For a screw jack MA 50 with acme screw Tr 407 (1-start or more) 3 m long with supported end, max. allowed rotating speed is 550 rpm. With a 1-start thread, this rotating speed is equivalent to a linear speed of 64 mm/s.

Screw jacks

dmin [mm] - min. thread diameter (for a thread Tr dP: dmin = d - P)L [mm] - acme screw length

18

23

4

5

6

7

8

9

10

11

12

13

14

1

6

7

8

10

11

2

Screw jacks MA Series

Screw jacks MA Series with travelling screw (Mod.A)STRUCTURAL ELEMENTS

1 - acme screw in steel C 43 (UNI 7847), whirled thread2 - worm shaft with true involute, ground worm profile ZI (UNI 4760), made in steel, case-hardened3 - bronze wormwheel with true involute profile ZI (UNI 4760), the length of the internal nut is double respect to SJ Series;

the bigger mass of the bronze nut allows a higher duty cycle and a longer life4 - thrust ball bearing for high load capacity5 - gear box shape which allows effective heat dissipation giving increased duty cycle6 - radial guide of the wormwheel for increased stiffness and improved efficiency7 - raised cover with bronze guide against radial load for acme screw;

the raised cover may also be used as a spigot diameter8 - grub screw which prevents the threaded cover unscrewing9 - synthetic oil lubricated worm gearbox for a better heat dissipation;

this allows higher input speed, improved efficiency and longer life10 - radial lubricant seal 11 - O-Ring as lubricant seal12 - breather13 - oil level plug14 - oil drain plug

19

34

9

10

13

1

14

15

16

17

18

19

20

2

1312

14

16

17 11

5

6

78

2


Screw jacks MA Series with travelling nut (Mod.B)STRUCTURAL ELEMENTS

1 - acme screw in steel C 43 (UNI 7847), whirled thread2 - bronze travelling nut with flange3 - worm shaft with true involute, ground worm profile ZI (UNI 4760), made in steel, case-hardened4 - bronze wormwheel with true involute profile ZI (UNI 4760)5 - cast iron support of the wormwheel bronze rim6 - acme screw fixed to the wormwheel through the cylindrical centring part

and LEFT-HAND (for push load) or RIGHT-HAND (for pull load) metric thread7 - lock nut with the opposite direction metric thread to ensure safe acme screw fixing8 - acme screw wormwheel pins against unscrewing9 - thrust ball bearing for high load capacity

10 - gear box11 - low cover12 - raised cover; may also be used as a spigot diameter13 - radial bronze guide of the wormwheel, for increased stiffness and improved efficiency14 - grub screw which prevents the threaded cover unscrewing15 - synthetic oil lubricated worm gearbox16 - radial lubricant seal 17 - O-Ring as lubricant seal18 - breather19 - oil level plug20 - oil drain plug

20

2

Screw jacks MA Series with 1-start acme screwTECHNICAL SPECIFICATIONS

SCREW JACK SIZE MA 5 MA 10 MA 25 MA 50

Load capacity [kN], (push - pull) 5 10 25 50

1-start acme screw Tr 184 Tr 225 Tr 306 Tr 407

Worm gear centre distance [mm] 30 40 50 63

Available ratio

RV 1 : 4 (4 : 16) 1 : 5 (4 : 20) 1 : 6 (4 : 24) 1 : 7 (4 : 28)

RN 1 : 16 (2 : 32) 1 : 20 1 : 18 (2 : 36) 1 : 14 (2 : 28)

RL 1 : 24 1 : 25 1 : 24 1 : 28

Stroke [mm] for 1 input shaft revolution

Ratio

RV1 1 1 1 1

RN1 0.25 0.25 0.33 0.5

RL1 0.17 0.2 0.25 0.25

Starting efficiency Ratio

RV1 0.21 0.22 0.20 0.18

RN1 0.16 0.15 0.16 0.15

RL1 0.13 0.14 0.13 0.11

Running efficiency at 3000 rpm (1)

Ratio

RV1 0.40 0.41 0.38 0.37

RN1 0.31 0.30 0.30 0.32

RL1 0.27 0.28 0.28 0.26

Starting torque on input shaft at max. load [Nm]

Ratio

RV1 3.8 7.2 19.9 44.1

RN1 1.2 2.6 8.3 24.8

RL1 1.0 2.3 7.6 18.0

Max. permissible operating power [kW] (2)

Ratio

RV1 0.40 0.60 1.2 2.4

RN1 0.20 0.30 0.7 1.7

RL1 0.17 0.25 0.6 1.2

Reactive torque on acme screw (nut) required at max. load [Nm]

8 20 65 165

Gear box materialcasting in aluminium alloy

EN 1706 - AC-AlSi10Mg T6casting in spheroidal graphite iron

EN-GJS-500-7 (UNI EN 1563)

Mass of screw jack without acme screw [kg] 2.2 4.3 13 26

Mass for every 100 mm of acme screw [kg] 0.16 0.23 0.45 0.8

(1) - efficiency figures at different input speed on page 36(2) - THERMAL limit, referred to following working conditions duty cycle 40 % over 10 min time period (30 % over 1 hour time period) for screw jacks with travelling screw (Mod.A) duty cycle 30 % over 10 min time period (20 % over 1 hour time period) for screw jacks with travelling nut (Mod.B) at 25C environment temperature


21

2

MA 80 MA 100 MA 200 MA 350 SCREW JACK SIZE

80 100 200 350 Load capacity [kN], (push - pull)

Tr 559 Tr 6012 Tr 7012 Tr 10016 1-start acme screw

63 80 100 125 Worm gear centre distance [mm]

1 : 7 (4 : 28) 1 : 8 (4 : 32) 1 : 8 (4 : 32) 3 : 32 RV

Available ratio1 : 14 (2 : 28) 1 : 24 1 : 24 1 : 16 (2 : 32) RN

1 : 28 1 : 32 1 : 32 1 : 32 RL

1.28 1.5 1.5 1.5 RV1

RatioStroke [mm] for 1 input shaft revolution

0.64 0.5 0.5 1 RN1

0.32 0.38 0.38 0.5 RL1

0.18 0.20 0.17 0.16 RV1

Ratio Starting efficiency0.15 0.13 0.12 0.14 RN1

0.11 0.12 0.11 0.10 RL1

0.39 0.41 0.38 0.39 RV1

RatioRunning efficiency at 3000 rpm (1)

0.33 0.32 0.31 0.34 RN1

0.27 0.30 0.28 0.29 RL1

77 120 282 525 RV1

RatioStarting torque on input shaft at max. load [Nm]

47 62 133 400 RN1

34 50 109 280 RL1

2.5 3.0 4.5 8.0 RV1

RatioMax. permissible operating power [kW] (2)

1.8 2.6 4.0 7.0 RN1

1.2 2.3 3.8 6.8 RL1

368 525 1180 2880Reactive torque on acme screw (nut) required at max. load [Nm]

casting in spheroidal graphite iron EN-GJS-500-7 (UNI EN 1563)

Gear box material

26 48 75 145 Mass of screw jack without acme screw [kg]

1.6 1.8 2.5 5.2 Mass for every 100 mm of acme screw [kg]

Screw jacks MA Series with 1-start acme screwTECHNICAL SPECIFICATIONS



22

MA 10 10 kN 8 kN 6 kN 2 kN

RV1 RN1 RL1 RV1 RN1 RL1 RV1 RN1 RL1 RV1 RN1 RL1

RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 50 12.5 10 3.9 1.22 1.3 0.42 1.1 0.36 3.1 0.89 1.1 0.33 0.9 0.29 2.3 0.73 0.8 0.25 0.7 0.21 0.8 0.24 0.3 0.08 0.2 0.071 500 25 6.3 5 4.4 0.68 1.4 0.23 1.2 0.19 3.5 0.55 1.1 0.18 0.9 0.15 2.6 0.41 0.9 0.13 0.7 0.11 0.9 0.14 0.3 0.04 0.2 0.041 000 16.7 4.2 3.3 4.6 0.48 1.5 0.16 1.2 0.13 3.6 0.38 1.2 0.13 1.0 0.10 2.7 0.29 0.9 0.09 0.7 0.08 0.9 0.10 0.3 0.03 0.2 0.03

750 12.5 3.1 2.5 4.7 0.37 1.6 0.12 1.3 0.10 3.8 0.30 1.2 0.10 1.0 0.08 2.8 0.22 0.9 0.07 0.8 0.06 0.9 0.07 0.3 0.02 0.2 0.02500 8.3 2.1 1.7 5.0 0.26 1.6 0.09 1.4 0.07 4.0 0.21 1.3 0.07 1.1 0.06 3.0 0.16 1.0 0.05 0.8 0.04 1.0 0.05 0.3 0.02 0.3 0.01300 5 1.3 1 5.1 0.16 1.8 0.05 1.5 0.05 4.1 0.13 1.4 0.04 1.2 0.04 3.1 0.10 1.1 0.03 0.9 0.03 1.0 0.03 0.3 0.01 0.3 0.01100 1.7 0.4 0.3 5.5 0.06 2.0 0.02 1.6 0.02 4.4 0.05 1.6 0.02 1.3 0.01 3.3 0.03 1.2 0.01 1.0 0.01 1.1 0.01 0.4 0.01 0.3 0.01

MA 50 50 kN 35 kN 25 kN 10 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 50 25 12.5 12.4 3.91 7.7 2.40 15.1 4.73 8.7 2.73 5.4 1.68 10.8 3.38 6.2 1.95 3.8 1.20 4.3 1.35 2.5 0.78 1.5 0.481 500 25 12.5 6.3 25.0 3.92 14.4 2.26 8.5 1.34 17.5 2.74 10.0 1.58 6.0 0.94 12.5 1.96 7.2 1.13 4.3 0.67 5.0 0.78 2.9 0.45 1.7 0.271 000 16.7 8.3 4.2 26.5 2.78 13.3 1.60 9.1 0.96 18.6 1.94 10.7 1.12 6.4 0.67 13.3 1.39 7.6 0.80 4.6 0.48 5.3 0.56 3.1 0.32 1.8 0.19

750 12.5 6.3 3.1 27.4 2.15 16.0 1.25 9.5 0.74 19.2 1.51 11.1 0.87 6.6 0.52 13.7 1.08 7.9 0.62 4.7 0.37 5.5 0.43 3.2 0.25 1.9 0.15500 8.3 4.2 2.1 28.8 1.51 16.4 0.86 10.0 0.52 20.2 1.06 11.5 0.60 7.0 0.37 14.4 0.75 8.2 0.43 5.0 0.26 5.8 0.30 3.3 0.17 2.0 0.11300 5 2.5 1.3 30.5 0.96 17.4 0.55 10.8 0.34 21.3 0.67 12.2 0.38 7.6 0.24 15.2 0.48 8.7 0.27 5.4 0.17 6.1 0.19 3.5 0.11 2.1 0.07100 1.7 0.8 0.4 33.0 0.35 19.3 0.20 12.5 0.13 23.1 0.24 13.5 0.14 8.8 0.09 16.5 0.17 9.7 0.10 6.3 0.07 6.6 0.07 3.9 0.04 2.5 0.03

MA 5 5 kN 4 kN 3 kN 1 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 50 12.5 8.3 2.0 0.63 0.7 0.20 0.5 0.15 1.6 0.50 0.5 0.16 0.4 0.12 1.2 0.38 0.4 0.12 0.3 0.09 0.4 0.13 0.1 0.04 0.1 0.031 500 25 6.3 4.2 2.2 0.35 0.7 0.11 0.5 0.08 1.8 0.28 0.6 0.09 0.4 0.07 1.3 0.21 0.4 0.07 0.3 0.05 0.4 0.07 0.1 0.02 0.1 0.021 000 16.7 4.2 2.8 2.3 0.24 0.7 0.08 0.6 0.06 1.9 0.20 0.6 0.06 0.4 0.05 1.4 0.15 0.4 0.05 0.3 0.03 0.5 0.05 0.1 0.01 0.1 0.01

750 12.5 3.1 2.1 2.4 0.19 0.7 0.05 0.6 0.05 1.9 0.15 0.6 0.05 0.5 0.04 1.4 0.11 0.4 0.04 0.3 0.03 0.5 0.04 0.1 0.01 0.1 0.01500 8.3 2.1 1.4 2.5 0.13 0.8 0.04 0.6 0.03 2.0 0.11 0.6 0.03 0.5 0.03 1.5 0.08 0.5 0.02 0.4 0.02 0.5 0.03 0.1 0.01 0.1 0.01300 5 1.3 0.8 2.6 0.08 0.8 0.03 0.7 0.02 2.1 0.07 0.7 0.02 0.5 0.02 1.6 0.05 0.5 0.02 0.4 0.01 0.5 0.02 0.2 0.01 0.1 0.01100 1.7 0.4 0.3 2.8 0.03 0.9 0.01 0.8 0.01 2.2 0.02 0.7 0.01 0.6 0.01 1.7 0.02 0.5 0.01 0.5 0.01 0.6 0.01 0.2 0.01 0.1 0.01

MA 25 25 kN 20 kN 15 kN 10 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 50 16.7 12.5 3.5 1.11 3.6 1.12 8.4 2.63 3.5 1.11 2.8 0.89 6.3 1.97 2.7 0.83 2.1 0.67 4.1 1.30 1.7 0.55 1.4 0.451 500 25 8.3 6.3 11.7 1.83 4.8 0.76 3.9 0.61 9.3 1.47 3.9 0.60 3.1 0.49 7.0 1.10 2.9 0.45 2.3 0.37 4.6 0.74 1.9 0.30 1.6 0.251 000 16.7 5.6 4.2 12.2 1.28 5.0 0.53 4.1 0.43 9.8 1.03 4.0 0.42 3.3 0.34 7.3 0.77 3.0 0.32 2.5 0.26 4.8 0.52 2.0 0.21 1.6 0.18

750 12.5 4.2 3.1 12.7 1.00 5.2 0.41 4.2 0.33 10.2 0.80 4.2 0.33 3.4 0.27 7.6 0.60 3.1 0.24 2.5 0.20 5.0 0.40 2.1 0.16 1.7 0.14500 8.3 2.8 2.1 13.5 0.71 5.5 0.29 4.5 0.24 10.8 0.56 4.4 0.23 3.6 0.19 8.1 0.42 3.3 0.17 2.7 0.14 5.4 0.28 2.2 0.12 1.8 0.10300 5 1.7 1.3 14.1 0.44 5.8 0.18 4.8 0.15 11.3 0.35 4.6 0.15 3.9 0.12 8.5 0.27 3.5 0.11 2.9 0.09 5.6 0.09 2.4 0.08 2.0 0.06100 1.7 0.6 0.4 15.1 0.16 6.5 0.07 5.5 0.06 12.1 0.13 5.2 0.05 4.4 0.05 9.0 0.09 3.9 0.04 3.3 0.03 6.0 0.06 2.6 0.03 2.2 0.03

2

Following tables show the screw jack LINEAR SPEED v [mm/s] and relative TORQUE T1 [Nm] and POWER P1 [kW] on input shaft, with reference to the INPUT SPEED n1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kN] applied on the screw jack.

Intermediate values for linear speed v, torque T1 and power P1 at different input speed can be calculated by linear interpolation of the figures stated in the table.

The figures in the tables refer to work at 25C environment temperature and max. duty cycle of: 40 % over 10 min time period or 30 % over 1 hour time period, for screw jacks with travelling screw (Mod.A), 30 % over 10 min time period or 20 % over 1 hour time period, for screw jacks with travelling nut (Mod.B)

ATTENTION! The figures in the red shaded area indicate operational restrictions due to thermal limits. When the selection is made within such area, the duty cycle must be reduced or the greater size screw jack must be selected, in order to allow effective heat dissipation. For a better evaluation, please contact SERVOMECH Engineering Dpt.

LOAD

n1 [rpm]

LINEAR SPEED v [mm/s]

RATIO RATIO RATIO RATIO

LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



Screw jacks MA Series - 1-start acme screw

23

MA 80 80 kN 60 kN 40 kN 20 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 64.3 32.1 16.1 12.7 4.00 7.6 2.39 1 0.6 3.33 6.4 2.00 3.8 1.201 500 32.0 16.0 8.0 18.0 2.83 36.7 5.76 21.5 3.37 13.5 2.12 24.5 3.84 14.3 2.25 9.0 1.41 12.2 1.92 7.2 1.12 4.5 0.711 000 21.4 10.7 5.3 52.6 5.51 31.3 3.28 20.0 2.09 39.5 4.13 23.5 2.46 15.0 1.57 26.3 2.76 15.7 1.64 10.0 1.05 13.2 1.38 7.8 0.82 5.0 0.52

750 16.1 8.0 4.0 54.7 4.30 33.8 2.65 21.0 1.65 41.0 3.22 25.3 1.99 15.8 1.24 27.4 2.15 16.9 1.32 10.5 0.82 13.7 1.07 8.4 0.66 5.3 0.41500 10.7 5.3 2.7 58.6 3.07 35.8 1.87 22.0 1.15 44.0 2.30 26.9 1.41 16.5 0.86 29.3 1.53 17.9 0.94 11.0 0.58 14.7 0.77 9.0 0.47 5.5 0.29300 6.4 3.2 1.6 65.9 2.07 38.1 1.20 24.5 0.77 49.4 1.55 28.6 0.90 18.4 0.58 33.0 1.03 19.1 0.60 12.3 0.38 16.5 0.52 9.5 0.30 6.1 0.19100 2.1 1.1 0.5 73.2 0.77 44.4 0.47 28.5 0.30 54.9 0.57 33.3 0.35 21.4 0.2 36.6 0.38 22.2 0.23 14.3 0.15 18.3 0.19 11.1 0.12 7.1 0.07

MA 100 100 kN 80 kN 50 kN 20 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 75 25 18.8 15.9 5.00 12.4 3.91 10.0 3.12 11.6 3.66 5.0 1.56 4.0 1.251 500 37.5 12.5 9.4 28.2 4.43 22.5 3.54 22.6 3.55 18.0 2.83 33.2 5.22 14.1 2.22 11.3 1.77 13.3 2.09 5.6 0.89 4.5 0.711 000 25 8.3 6.3 70.8 7.42 30.0 3.14 24.1 2.52 56.7 5.93 24.0 2.52 19.2 2.02 35.4 3.71 15.0 1.57 12.0 1.26 14.2 1.48 6.0 0.63 4.8 0.50

750 18.8 6.3 4.7 73.5 5.77 31.3 2.46 25.3 1.99 58.8 4.61 25.1 1.97 20.2 1.59 36.7 2.88 15.7 1.23 12.6 0.99 14.7 1.15 6.3 0.49 5.0 0.40500 12.5 4.2 3.1 77.0 4.03 32.9 1.72 26.6 1.39 61.6 3.23 26.3 1.38 21.3 1.12 38.5 2.02 16.4 0.86 13.5 0.70 15.4 0.81 6.6 0.34 5.3 0.28300 7.5 2.5 1.9 82.3 2.59 35.2 1.11 28.7 0.90 65.9 2.07 28.2 0.88 22.9 0.72 41.2 1.29 17.6 0.55 14.3 0.45 16.5 0.52 7.0 0.22 5.7 0.18100 2.5 0.8 0.6 89.1 0.93 40.0 0.42 33.0 0.34 71.3 0.75 32.0 0.33 26.4 0.28 44.5 0.47 20.0 0.21 16.5 0.17 17.8 0.19 8.0 0.08 6.6 0.07

MA 200 200 kN 150 kN 100 kN 50 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 75 25 18.8 25.7 8.06 21.3 6.70 12.8 4.03 10.7 3.351 500 37.5 12.5 9.4 48.9 7.68 45.4 7.13 36.7 5.76 30.3 4.75 24.5 3.84 36.1 5.66 15.1 2.38 12.2 1.921 000 25 8.3 6.3 65.0 6.80 52.1 5.48 48.7 5.10 39.1 4.09 76.5 8.01 32.5 3.40 26.1 2.73 38.8 4.01 16.2 1.70 13.0 1.36

750 18.8 6.3 4.7 68.6 5.39 52.8 4.30 119 9.37 51.4 4.04 41.1 3.22 79.6 6.25 34.3 2.69 27.4 2.15 39.8 3.12 17.1 1.35 13.7 1.07500 12.5 4.2 3.1 167 8.77 71.4 3.74 57.7 3.02 125 6.58 53.5 2.80 43.2 2.26 83.8 4.39 35.7 1.87 28.8 1.51 41.9 2.19 17.8 0.93 14.4 0.75300 7.5 2.5 1.9 178 5.62 76.1 2.39 61.8 1.94 134 4.21 57.1 1.79 46.4 1.46 89.4 2.81 38.1 1.20 30.9 0.97 44.7 1.40 19.0 0.60 15.5 0.49100 2.5 0.8 0.6 195 2.05 87.3 0.92 71.3 0.76 146 1.54 65.9 0.69 54.3 0.57 97.8 1.02 44.0 0.46 36.2 0.38 48.9 0.51 22.0 0.23 18.1 0.19

MA 350 350 kN 250 kN 150 kN 100 kN


RV1 RN1 RL1T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 75 50 25 41.2 12.9 61.2 19.2 46.8 14.7 27.5 8.621 500 37.5 25 12.5 80.9 12.7 113 17.8 82.0 12.8 48.5 7.62 75.5 11.8 54.7 8.59 32.3 5.081 000 25 16.7 8.3 120 12.6 144 15.1 86.1 9.02 120 12.6 86.5 9.00 51.7 5.41 80.4 8.42 57.7 6.04 34.4 3.61

750 18.8 12.5 6.3 210 16.5 127 9.99 209 16.4 150 11.7 90.8 7.13 125 9.87 90.1 7.07 54.5 4.28 83.8 6.58 60.1 4.72 36.3 2.85500 12.5 8.3 4.2 308 16.1 223 11.7 134 7.04 220 11.5 159 8.37 96.1 5.03 132 6.92 95.9 5.02 57.7 3.02 88.1 4.61 63.9 3.35 38.4 2.01300 7.5 5 2.5 331 10.4 242 7.61 144 4.53 236 7.44 173 5.43 103 3.24 142 4.46 103 3.26 61.8 1.94 94.7 2.98 69.2 2.17 41.2 1.29100 2.5 1.7 0.8 369 3.87 269 2.82 166 1.75 264 2.76 192 2.01 119 1.25 158 1.66 115 1.21 71.5 0.75 105 1.11 76.9 0.80 47.6 0.50

2

LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



Screw jacks MA Series - 1-start acme screwFollowing tables show the screw jack LINEAR SPEED v [mm/s] and relative TORQUE T1 [Nm] and POWER P1 [kW] on input shaft, with reference to the INPUT SPEED n1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kN] applied on the screw jack.




24

2

SCREW JACK SIZE MA 5 MA 10 MA 25 MA 50

Load capacity [kN], (push - pull) 5 10 25 50

2-starts acme screw Tr 188 (P4) Tr 2210 (P5) Tr 3012 (P6) Tr 4014 (P7)

Worm gear centre distance [mm] 30 40 50 63

Available ratio

RV 1 : 4 (4 : 16) 1 : 5 (4 : 20) 1 : 6 (4 : 24) 1 : 7 (4 : 28)

RN 1 : 16 (2 : 32) 1 : 20 1 : 18 (2 : 36) 1 : 14 (2 : 28)

RL 1 : 24 1 : 25 1 : 24 1 : 28


Ratio

RV1 2 2 2 2

RN1 0.50 0.50 0.67 1

RL1 0.33 0.4 0.50 0.50


RV1 0.32 0.33 0.31 0.29

RN1 0.25 0.22 0.23 0.24

RL1 0.20 0.21 0.20 0.18


Ratio

RV1 0.52 0.53 0.51 0.50

RN1 0.41 0.40 0.43 0.44

RL1 0.36 0.39 0.39 0.38


Ratio

RV1 4.9 9.7 26 56

RN1 1.6 3.6 12 34

RL1 1.4 3 10 23


Ratio

RV1 0.52 0.78 1.2 2.4

RN1 0.26 0.40 0.7 1.7

RL1 0.23 0.35 0.6 1.2


12 30 97 243

Gear box materialcasting in aluminium alloy

EN 1706 - AC-AlSi10Mg T6casting in spheroidal graphite iron

EN-GJS-500-7 (UNI EN 1563)

Mass of screw jack without acme screw [kg] 2.2 4.3 13 26

Mass for every 100 mm of acme screw [kg] 0.16 0.23 0.45 0.8


Screw jacks MA Series with 2-starts acme screwTECHNICAL SPECIFICATIONS


25

2

MA 80 MA 100 MA 200 MA 350 SCREW JACK SIZE

80 100 200 350 Load capacity [kN], (push - pull)

Tr 5518 (P9) Tr 6024 (P12) Tr 7024 (P12) Tr 10032 (P16) 2-starts acme screw

63 80 100 125 Worm gear centre distance [mm]

1 : 7 (4 : 28) 1 : 8 (4 : 32) 1 : 8 (4 : 32) 3 : 32 RV

Available ratio1 : 14 (2 : 28) 1 : 24 1 : 24 1 : 16 (2 : 32) RN

1 : 28 1 : 32 1 : 32 1 : 32 RL

2.57 3 3 3 RV1

RatioStroke [mm] for 1 input shaft revolution

1.29 1 1 2 RN1

0.64 0.75 0.75 1 RL1

0.28 0.30 0.28 0.26 RV1

Ratio Starting efficiency0.23 0.21 0.20 0.23 RN1

0.17 0.19 0.18 0.18 RL1

0.51 0.54 0.52 0.51 RV1

RatioRunning efficiency at 3000 rpm (1)

0.44 0.43 0.42 0.48 RN1

0.38 0.41 0.39 0.41 RL1

119 158 342 650 RV1

RatioStarting torque on input shaft at max. load [Nm]

72 76 163 480 RN1

48 63 134 316 RL1

3.2 4 6.2 10.5 RV1

RatioMax. permissible operating power [kW] (2)

2.4 3.5 5.4 10 RN1

1.7 3.1 5.3 9.6 RL1

520 775 1 690 4 100Reactive torque on acme screw (nut) required at max. load [Nm]

casting in spheroidal graphite iron EN-GJS-500-7 (UNI EN 1563)

Gear box material

26 48 75 145 Mass of screw jack without acme screw [kg]

1.6 1.8 2.5 5.2 Mass for every 100 mm of acme screw [kg]




26

MA 10 10 kN 8 kN 6 kN 2 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 100 25 20 6.1 1.90 2.0 0.62 1.7 0.52 4.9 1.52 1.6 0.49 1.3 0.41 3.7 1.14 1.2 0.37 1.0 0.31 1.2 0.38 0.4 0.12 0.4 0.101 500 50 12.5 10 6.6 1.03 2.2 0.34 1.9 0.29 5.3 0.82 1.8 0.27 1.5 0.23 4.0 0.62 1.3 0.21 1.1 0.17 1.3 0.21 0.5 0.07 0.4 0.051 000 33.3 8.3 6.7 6.9 0.72 2.3 0.24 1.9 0.20 5.5 0.57 1.9 0.19 1.6 0.16 4.1 0.43 1.4 0.14 1.2 0.12 1.4 0.14 0.5 0.05 0.4 0.04

750 25 6.3 5 7.2 0.56 2.4 0.19 2.1 0.16 5.8 0.45 1.9 0.15 1.6 0.13 4.3 0.34 1.5 0.11 1.2 0.10 1.5 0.11 0.5 0.04 0.4 0.03500 16.7 4.2 3.3 7.5 0.39 2.6 0.13 2.2 0.11 6.0 0.31 2.1 0.11 1.7 0.09 5.5 0.24 1.6 0.08 1.3 0.07 1.5 0.08 0.5 0.03 0.5 0.02300 10 2.5 2 7.8 0.24 2.8 0.09 2.3 0.07 6.2 0.19 2.2 0.07 1.9 0.06 4.7 0.15 1.7 0.05 1.4 0.04 1.6 0.05 0.6 0.02 0.5 0.01100 3.3 0.8 0.7 8.6 0.09 3.2 0.03 2.7 0.03 6.9 0.07 2.5 0.03 2.2 0.02 5.2 0.05 1.9 0.02 1.6 0.02 1.7 0.02 0.7 0.01 0.6 0.01

MA 50 50 kN 35 kN 25 kN 10 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 100 50 25 12.6 3.95 7.4 2.33 16.0 5.00 9.0 2.82 5.3 1.7 6.4 2.00 3.6 1.13 2.1 0.671 500 50 25 12.5 34.8 5.46 20.1 3.15 12.1 1.91 24.3 3.82 14.1 2.21 8.5 1.33 17.4 2.73 10.0 1.58 6.1 0.95 7.0 1.09 4.0 0.63 2.5 0.381 000 33.3 16.7 8.3 37.1 3.88 21.3 2.23 13.1 1.37 26.0 2.72 14.9 1.56 9.2 0.96 18.5 1.94 10.6 1.11 6.6 0.69 7.4 0.78 4.3 0.45 2.6 0.27

750 25 12.5 6.3 38.2 3.00 22.6 1.77 13.5 1.06 26.7 2.10 15.8 1.24 9.5 0.74 19.1 1.50 11.3 0.89 6.7 0.53 7.7 0.60 4.5 0.35 2.7 0.21500 16.7 8.3 4.2 40.6 2.13 23.5 1.23 14.4 0.75 28.4 1.49 16.4 0.86 10.1 0.53 20.3 1.06 11.7 0.61 7.2 0.38 8.1 0.43 4.7 0.25 2.9 0.15300 10 5 2.5 43.3 1.36 24.8 0.78 15.8 0.49 30.3 0.95 17.3 0.54 11.0 0.35 21.6 0.68 12.4 0.39 7.9 0.25 8.7 0.27 5.0 0.16 3.2 0.10100 3.3 1.7 0.8 46.7 0.49 28.0 0.29 18.2 0.19 32.7 0.34 19.6 0.20 12.7 0.13 23.3 0.24 14.0 0.15 9.1 0.10 9.4 0.10 5.6 0.06 3.7 0.04

MA 5 5 kN 4 kN 3 kN 1 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 100 25 16.7 3.1 0.96 1.0 0.30 0.8 0.23 2.5 0.77 0.8 0.24 0.6 0.19 1.9 0.58 0.6 0.18 0.5 0.14 0.6 0.19 0.2 0.06 0.2 0.051 500 50 12.5 8.3 3.3 0.52 1.1 0.17 0.8 0.13 2.7 0.42 0.9 0.13 0.7 0.10 2.0 0.31 0.7 0.10 0.5 0.08 0.7 0.10 0.2 0.03 0.2 0.031 000 33.3 8.3 5.6 3.5 0.36 1.1 0.12 0.9 0.09 2.8 0.29 0.9 0.09 0.7 0.07 2.1 0.22 0.7 0.07 0.5 0.05 0.7 0.07 0.2 0.02 0.2 0.02

750 25 6.3 4.2 3.6 0.28 1.2 0.09 0.9 0.7 2.9 0.23 0.9 0.07 0.8 0.06 2.2 0.17 0.7 0.05 0.6 0.04 0.7 0.06 0.3 0.02 0.2 0.01500 16.7 4.2 2.8 3.8 0.20 1.2 0.06 1.0 0.05 3.1 0.16 1.0 0.05 0.8 0.04 2.3 0.12 0.7 0.04 0.6 0.03 0.8 0.04 0.3 0.01 0.2 0.01300 10 2.5 1.7 4.0 0.12 1.3 0.04 1.0 0.03 3.2 0.10 1.0 0.03 0.8 0.03 2.4 0.07 0.8 0.02 0.6 0.02 0.8 0.02 0.3 0.01 0.2 0.01100 3.3 0.8 0.6 4.4 0.05 1.4 0.01 1.2 0.01 3.5 0.04 1.2 0.01 1.0 0.01 2.6 0.03 0.9 0.01 0.7 0.01 0.9 0.01 0.3 0.01 0.3 0.01

MA 25 25 kN 20 kN 15 kN 10 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 100 33.3 25 5.0 1.56 4.1 1.29 9.4 2.94 3.8 1.17 3.1 0.97 6.3 1.96 2.5 0.78 2.1 0.651 500 50 16.7 12.5 17.0 2.66 7.0 1.10 5.8 0.91 13.6 2.13 5.6 0.88 4.7 0.73 10.2 1.60 4.2 0.66 3.5 0.55 6.8 1.07 2.8 0.44 2.3 0.361 000 33.3 11.1 8.3 17.7 1.85 7.4 0.78 6.1 0.64 14.2 1.48 6.0 0.62 4.9 0.51 10.6 1.11 4.5 0.47 3.7 0.38 7.1 0.74 3.0 0.31 2.5 0.25

750 25 8.3 6.3 18.2 1.43 7.7 0.60 6.3 0.49 14.6 1.14 6.1 0.48 5.1 0.39 10.9 0.86 4.6 0.36 3.8 0.30 7.3 0.57 3.1 0.24 2.5 0.20500 16.7 5.6 4.2 19.5 1.02 8.1 0.42 6.8 0.35 15.6 0.82 6.5 0.34 5.4 0.28 11.7 0.61 4.9 0.25 4.1 0.21 7.8 0.41 3.2 0.17 2.7 0.14300 10 3.3 2.5 20.5 0.64 8.6 0.27 7.3 0.23 16.4 0.52 6.9 0.22 5.8 0.18 12.3 0.39 5.2 0.16 4.4 0.14 8.2 0.26 3.4 0.11 2.9 0.09100 3.3 1.1 0.8 22.6 0.24 9.8 0.10 8.5 0.09 18.6 0.19 7.8 0.08 6.8 0.07 13.5 0.14 5.9 0.06 5.1 0.05 9.1 0.09 3.9 0.04 3.4 0.04

2LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



Screw jacks MA Series - 2-starts acme screwFollowing tables show the screw jack LINEAR SPEED v [mm/s] and relative TORQUE T1 [Nm] and POWER P1 [kW] on input shaft, with reference to the INPUT SPEED n1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kN] applied on the screw jack.




27

MA 80 80 kN 60 kN 40 kN 20 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 129 64.3 32.1 18.6 5.84 10.9 3.42 16.2 5.07 9.3 2.92 5.5 1.711 500 64.3 32.1 16.1 25.0 3.92 30.6 4.81 18.8 2.94 35.8 5.62 20.4 3.20 12.5 1.96 17.9 2.81 10.2 1.60 6.3 0.981 000 42.9 21.4 10.7 76.2 7.98 43.9 4.59 27.4 2.87 57.2 5.98 32.9 3.46 20.6 2.15 38.1 3.99 22.0 2.30 13.7 1.43 19.1 1.99 11.0 1.15 6.9 0.72

750 32.1 16.1 8.0 78.1 6.13 46.7 3.67 28.6 2.24 58.5 4.60 35.0 2.75 21.5 1.68 39.0 3.06 23.4 1.83 14.3 1.12 19.5 1.53 11.7 0.92 7.2 0.56500 21.4 10.7 5.4 82.3 4.31 49.1 2.57 30.0 1.57 61.8 3.23 36.8 1.93 22.5 1.18 41.2 2.15 24.6 1.28 15.0 0.78 20.6 1.08 12.3 0.68 7.5 0.39300 12.9 6.4 3.2 90.5 2.84 51.9 1.63 33.0 1.03 67.9 2.13 38.9 1.22 24.7 0.78 45.3 1.42 25.9 0.81 16.5 0.52 22.7 0.71 13.0 0.41 8.3 0.26100 4.3 2.1 1.1 98.9 1.03 59.3 0.62 37.9 0.40 74.1 0.78 44.5 0.47 28.4 0.30 49.4 0.52 29.7 0.31 19.0 0.20 24.7 0.26 14.8 0.16 9.5 0.10

MA 100 100 kN 80 kN 50 kN 20 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 150 50 37.5 23.3 7.31 18.4 5.76 14.6 4.57 17.8 5.58 7.4 2.30 5.8 1.831 500 75 25 18.8 40.8 6.40 33.2 5.20 32.6 5.12 26.5 4.16 48.6 7.63 20.4 3.20 16.6 2.60 19.4 3.05 8.2 1.28 6.7 1.041 000 50 16.7 12.5 44.6 4.67 36.1 3.78 82.3 8.62 35.7 3.73 28.9 3.02 51.5 5.39 22.3 2.33 18.1 1.89 20.6 2.16 8.9 0.93 7.2 0.76

750 37.5 12.5 9.4 106 8.32 46.6 3.66 36.8 2.89 84.8 6.66 37.3 2.93 29.5 2.31 53.0 4.16 23.3 1.83 18.4 1.44 21.2 1.66 9.3 0.73 7.4 0.58500 25 8.3 6.3 112 5.87 48.3 2.53 38.9 2.04 89.7 4.69 38.6 2.02 31.2 1.63 56.0 2.93 24.1 1.26 19.5 1.02 22.4 1.17 9.7 0.51 7.8 0.41300 15 5 3.8 121 3.80 52.2 1.64 43.4 1.36 96.9 3.04 41.7 1.31 34.8 1.09 60.5 1.90 26.1 0.82 21.7 0.68 24.2 0.76 10.5 0.33 8.7 0.27100 5 1.7 1.3 131 1.37 59.5 0.62 50.0 0.52 105 1.10 47.6 0.50 40.0 0.42 65.4 0.69 29.8 0.31 25.0 0.26 26.2 0.27 11.9 0.12 10.0 0.10

MA 200 200 kN 150 kN 100 kN 50 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 150 50 37.5 38.2 12.0 30.5 9.56 45.5 14.3 19.1 6.00 15.2 4.781 500 75 25 18.8 84.2 13.3 67.8 10.7 63.2 9.92 50.9 7.99 42.1 6.61 33.9 5.32 50.3 7.89 21.1 3.31 17.0 2.661 000 50 16.7 12.5 90.5 9.48 74.3 7.77 67.9 7.11 55.7 5.83 107 11.2 45.3 4.74 37.1 3.89 53.5 5.61 22.6 2.37 18.6 1.94

750 37.5 12.5 9.4 96.6 7.58 78.1 6.13 166 13.0 72.4 5.69 58.6 4.60 110 8.66 48.3 3.79 39.1 3.07 55.1 4.33 24.2 1.90 19.5 1.53500 25 8.3 6.3 235 12.3 103 5.38 81.8 4.28 177 9.23 77.1 4.04 61.4 3.21 118 6.15 51.4 2.69 40.9 2.14 58.8 3.08 25.7 1.35 20.5 1.07300 15 5 3.8 254 7.98 110 3.45 90.1 2.83 191 5.99 82.5 2.59 67.6 2.12 127 3.99 55.0 1.73 45.0 1.41 63.5 2.00 27.5 0.86 22.5 0.71100 5 1.7 1.3 279 2.92 127 1.33 103 1.08 210 2.19 95.1 1.00 77.3 0.81 140 1.46 63.4 0.66 51.6 0.54 69.7 0.73 31.7 0.33 25.8 0.27

MA 350 350 kN 250 kN 150 kN 100 kN


RV2 RN2 RL2T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 150 100 50 59.0 18.5 67.0 21.4 39.3 12.41 500 75 50 25 154 24.2 110 17.3 155 24.3 111 17.5 66.1 10.4 103 16.2 74.0 11.6 44.1 6.921 000 50 33.3 16.7 168 17.6 198 20.7 120 12.5 163 17.1 119 12.4 71.8 7.51 109 11.4 79.0 8.27 47.9 5.01

750 37.5 25 12.5 289 22.7 180 14.1 286 22.4 207 16.2 128 10.1 171 13.5 124 9.73 76.8 6.03 114 8.96 82.6 6.49 51.2 4.02500 25 16.7 8.3 423 22.2 315 16.5 191 9.98 302 15.8 225 11.8 136 7.13 181 9.49 135 7.06 81.7 4.28 121 6.32 89.9 4.70 54.5 2.85300 15 10 5 461 14.5 337 10.6 200 6.26 330 10.4 241 7.57 143 4.47 198 6.21 145 4.54 85.5 2.68 132 4.14 96.4 3.03 57.0 1.79100 5 3.3 1.7 496 5.19 381 4.0 242 2.53 354 3.70 272 2.85 173 1.81 212 2.22 163 1.71 104 1.08 142 1.48 109 1.14 69.0 0.72

2

LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



Screw jacks MA Series - 2-starts acme screwFollowing tables show the screw jack LINEAR SPEED v [mm/s] and relative TORQUE T1 [Nm] and POWER P1 [kW] on input shaft, with reference to the INPUT SPEED n1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kN] applied on the screw jack.




28

2

SCREW JACK SIZE MA 25 MA 50 MA 80 MA 100 MA 200 MA 350

Load capacity [kN], (push - pull) 25 50 80 100 200 350

3-starts acme screw Tr 3018 (P6) Tr 4021 (P7) Tr 5527 (P9) Tr 6036 (P12) Tr 7036 (P12) Tr 10048 (P16)

Worm gear centre distance [mm] 50 63 63 80 100 125

Available ratio

RV 1 : 6 (4 : 24) 1 : 7 (4 : 28) 1 : 7 (4 : 28) 1 : 8 (4 : 32) 1 : 8 (4 : 32) 3 : 32

RN 1 : 18 (2 : 36) 1 : 14 (2 : 28) 1 : 14 (2 : 28) 1 : 24 1 : 24 1 : 16 (2 : 32)

RL 1 : 24 1 : 28 1 : 28 1 : 32 1 : 32 1 : 32


Ratio

RV3 3 3 3.86 4.5 4.5 4.5

RN3 1 1.5 1.93 1.5 1.5 3

RL3 0.75 0.75 0.96 1.12 1.12 1.5


RV3 0.36 0.34 0.33 0.36 0.34 0.31

RN3 0.28 0.29 0.28 0.27 0.24 0.28

RL3 0.24 0.24 0.21 0.25 0.21 0.21


Ratio

RV3 0.57 0.56 0.57 0.59 0.58 0.57

RN3 0.48 0.50 0.50 0.52 0.48 0.54

RL3 0.44 0.47 0.43 0.49 0.45 0.46


Ratio

RV3 33 70 148 201 427 803

RN3 15 42 89 88 203 594

RL3 13 26 60 73 167 391


Ratio

RV3 1.8 3.6 3.6 4.3 6.9 11.7

RN3 1.1 2.6 2.6 4 6.2 11

RL3 0.95 2 2 3.7 6.1 10.5


123 303 642 980 2 100 5 041

Gear box material casting in spheroidal graphite iron EN-GJS-500-7 (UNI EN 1563)

Mass of screw jack without acme screw [kg] 13 26 26 48 75 145

Mass for every 100 mm of acme screw [kg] 0.45 0.8 1.6 1.8 2.5 5.2

(1) - efficiency figures at different input speed on page 36(2) - THERMAL limit, referred to work with max. duty cycle 40 % over 10 min time period (30 % over 1 hour time period) at 25C environment temperature



29

MA 25 25 kN 20 kN 15 kN 10 kN


RV3 RN3 RL3T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 150 50 37.5 8.2 2.58 6.8 2.12 6.6 2.07 5.4 1.70 12.7 3.97 5.0 1.55 4.1 1.27 8.5 2.65 3.3 1.03 2.7 0.851 500 75 25 18.8 22.6 3.55 9.2 1.44 7.6 1.18 18.1 2.84 7.4 1.15 6.1 0.95 13.6 2.13 5.5 0.86 4.5 0.71 9.1 1.42 3.7 0.58 3.0 0.471 000 50 16.7 12.5 23.5 2.45 9.7 1.01 7.9 0.82 18.8 1.96 7.7 0.81 6.3 0.66 14.1 1.47 5.8 0.60 4.8 0.49 9.4 0.98 3.9 0.40 3.2 0.33

750 37.5 12.5 9.4 24.1 1.89 9.9 0.78 8.2 0.64 19.2 1.51 8.0 0.62 6.5 0.51 14.4 1.13 6.0 0.47 4.9 0.38 9.6 0.75 4.0 0.31 3.3 0.26500 25 8.3 6.3 25.5 1.33 10.5 0.55 8.7 0.46 20.4 1.07 8.4 0.44 7.0 0.36 15.3 0.80 6.3 0.33 5.3 0.27 10.2 0.53 4.2 0.22 3.5 0.18300 15 5 3.8 26.7 0.84 11.0 0.35 9.3 0.29 21.3 0.67 8.8 0.28 7.5 0.23 16.0 0.50 6.6 0.21 5.6 0.18 10.7 0.33 4.4 0.14 3.8 0.12100 5 1.7 1.3 29.1 0.30 12.5 0.13 10.8 0.11 23.3 0.24 10.0 0.10 8.5 0.09 17.4 0.18 7.5 0.08 6.5 0.07 11.6 0.12 5.0 0.05 4.3 0.04

MA 50 50 kN 35 kN 25 kN 10 kN


RV3 RN3 RL3T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 150 75 37.5 12.8 4.01 16.6 5.22 9.0 2.81 21.4 6.70 11.9 3.73 6.4 2.00 8.6 2.68 4.8 1.49 2.6 0.801 500 75 37.5 18.8 45.9 7.21 26.1 4.10 14.3 2.24 32.1 5.05 18.3 2.87 10.0 1.57 23.0 3.60 13.1 2.05 7.2 1.12 9.2 1.44 5.2 0.82 2.9 0.451 000 50 25 12.5 48.5 5.08 27.6 2.88 15.3 1.60 34.0 3.55 19.3 2.02 10.7 1.12 24.3 2.54 13.8 1.44 7.5 0.80 9.7 1.02 5.5 0.58 3.1 0.32

750 37.5 18.8 9.4 49.7 3.90 29.0 2.22 15.8 1.24 34.8 2.73 20.3 1.59 11.1 0.87 24.9 1.95 14.5 1.14 7.9 0.62 10.0 0.78 5.8 0.45 3.2 0.25500 25 12.5 6.3 52.4 2.74 30.0 1.57 16.7 0.87 36.7 1.92 21.0 1.10 11.7 0.61 26.2 1.37 15.0 0.78 8.4 0.44 10.5 0.55 6.0 0.31 3.4 0.17300 15 7.5 3.8 55.4 1.74 31.6 0.99 18.2 0.57 38.8 1.22 22.1 0.69 12.7 0.40 27.7 0.87 15.8 0.50 9.1 0.28 11.1 0.35 6.3 0.20 3.6 0.11100 5 2.5 1.3 59.4 0.62 38.8 0.37 20.7 0.22 41.6 0.44 24.7 0.26 14.5 0.15 29.7 0.31 17.7 0.18 10.4 0.11 11.9 0.12 7.1 0.07 4.2 0.04

MA 80 80 kN 60 kN 40 kN 20 kN


RV3 RN3 RL3T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 193 96.4 48.2 14.2 4.45 21.7 6.82 12.3 3.85 7.1 2.221 500 96.4 48.2 24.1 39.9 6.26 24.0 3.67 47.3 7.42 26.6 4.17 16.0 2.51 23.7 3.71 13.3 2.09 8.0 1.261 000 64.3 32.1 16.1 56.7 5.93 34.9 3.65 74.4 7.69 42.5 4.45 26.1 2.74 49.6 5.19 28.3 2.97 17.6 1.82 24.8 2.60 14.2 1.48 8.7 0.91

750 48.2 24.1 12.1 102 7.98 59.8 4.69 36.3 2.85 76.2 5.99 44.8 3.52 27.2 2.14 50.8 3.99 29.9 2.35 18.2 1.42 25.4 2.00 15.0 1.17 9.1 0.71500 32.1 16.1 8.0 107 5.50 62.4 3.27 38.0 1.99 79.8 4.18 46.8 2.45 28.5 1.49 53.2 2.78 31.2 1.63 19.0 0.99 26.6 1.39 15.6 0.82 9.5 0.50300 19.3 9.6 4.8 115 3.62 65.8 2.07 41.4 1.30 86.4 2.71 49.4 1.55 31.1 0.98 57.6 1.81 32.9 1.03 20.7 0.65 28.8 0.90 16.5 0.52 10.4 0.33100 6.4 3.2 1.6 125 1.31 74.4 0.78 47.4 0.50 93.8 0.98 55.8 0.58 35.6 0.37 62.5 0.65 37.2 0.39 23.7 0.25 31.3 0.33 18.6 0.19 11.9 0.12

2

LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]



Screw jacks MA Series - travelling screw (Mod.A)- 3-starts acme screw -



The figures in the tables refer to work with max. duty cycle of 40 % over 10 min time period or 30 % over 1 hour time period at 25C environment temperature.


30

MA 350 350 kN 250 kN 150 kN 100 kN


RV3 RN3 RL3T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 225 150 75 77.2 24.3 51.5 16.21 500 113 75 37.5 142 22.3 146 22.9 85.2 13.4 137 21.4 97.0 15.3 56.8 8.911 000 75 50 25 214 22.4 257 26.9 153 16.0 214 22.4 154 16.1 91.6 9.59 143 15.0 103 10.8 61.1 6.39

750 56.3 37.5 18.8 227 17.9 371 29.2 267 21.0 163 12.8 223 17.5 160 12.6 97.4 7.65 149 11.7 107 8.38 64.9 5.10500 37.5 25 12.5 547 28.6 401 21.0 242 12.7 390 20.5 287 15.0 173 9.03 234 12.3 172 9.00 104 5.42 156 8.17 115 6.00 69.0 3.61300 22.5 15 7.5 588 18.5 428 13.5 252 7.91 420 13.2 306 9.59 180 5.65 252 7.91 183 5.76 108 3.39 167 5.27 112 3.84 72.0 2.26100 7.5 5 2.5 626 6.55 477 4.99 302 3.16 447 4.68 341 3.57 216 2.26 268 2.81 205 2.14 129 1.35 179 1.87 137 1.43 86.2 0.90

MA 200 200 kN 150 kN 100 kN 50 kN


RV3 RN3 RL3T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 225 75 56.3 39.9 12.5 25.1 7.89 19.9 6.261 500 113 37.5 28.1 87.4 13.8 82.0 12.9 65.6 10.3 54.7 8.58 43.7 6.87 66.7 10.5 27.3 4.29 21.9 3.431 000 75 25 18.8 117 12.2 94.9 9.94 87.6 9.17 71.2 7.45 141 14.8 58.4 6.11 47.5 4.97 70.4 7.37 29.2 3.06 23.7 2.48

750 56.3 18.8 14.1 124 9.69 99.6 7.82 217 17.0 92.6 7.27 74.7 5.86 144 11.4 61.7 4.85 49.8 3.91 72.1 5.66 30.9 2.42 24.9 1.95500 37.5 12.5 9.4 131 6.87 104 5.46 229 12.0 98.4 5.15 78.2 4.09 153 7.98 65.6 3.43 52.1 2.73 76.2 3.99 32.8 1.72 26.1 1.36300 22.5 7.5 5.6 325 10.2 140 4.39 114 3.58 244 7.66 105 3.29 85.4 2.68 163 5.11 69.9 2.20 57.0 1.79 81.3 2.55 35.0 1.10 28.5 0.89100 7.5 2.5 1.9 355 3.71 160 1.67 130 1.36 266 2.75 120 1.25 97.3 1.02 177 11.9 80.0 0.83 64.9 0.68 88.6 0.93 39.9 0.42 32.4 0.34

MA 100 100 kN 80 kN 50 kN 20 kN


RV3 RN3 RL3T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 225 75 56.3 29.0 9.10 23.0 7.20 18.1 5.69 24.3 7.63 9.2 2.88 7.3 2.281 500 113 37.5 28.1 49.9 7.84 40.3 6.33 39.9 6.27 32.3 5.06 65.2 10.3 25.0 3.92 20.2 3.16 26.1 4.10 10.0 1.57 8.06 1.271 000 75 25 18.8 53.9 5.64 43.4 4.55 43.1 4.51 34.8 3.64 68.6 7.18 26.9 2.82 21.7 2.27 27.4 2.87 10.8 1.13 8.68 0.91

750 56.3 18.8 14.1 56.1 4.40 44.2 3.47 113 8.84 44.9 3.52 35.3 2.77 70.4 5.52 28.0 2.20 22.1 1.73 28.2 2.21 11.2 0.88 8.83 0.69500 37.5 12.5 9.4 148 7.62 57.9 3.03 46.6 2.44 118 6.17 46.3 2.43 37.3 1.95 73.7 3.86 29.0 1.52 23.3 1.22 29.5 1.54 11.6 0.61 9.32 0.49300 22.5 7.5 5.6 158 4.95 62.2 1.95 51.4 1.61 126 3.96 49.7 1.56 41.1 1.29 78.8 2.47 31.1 0.98 25.7 0.81 31.5 0.99 12.5 0.39 10.3 0.32100 7.5 2.5 1.9 169 1.77 70.1 0.73 58.7 0.61 136 1.42 56.1 0.59 47.0 0.49 84.6 0.39 35.1 0.37 29.4 0.31 33.9 0.35 14.0 0.15 11.8 0.12

2

LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]








31

2

SCREW JACK SIZE MA 25 MA 50 MA 80 MA 100 MA 200 MA 350

Load capacity [kN], (push - pull) 25 50 80 100 200 350

3-starts acme screw Tr 3024 (P6) Tr 4028 (P7) Tr 5536 (P9) Tr 6048 (P12) Tr 7048 (P12) Tr 10064 (P16)

Worm gear centre distance [mm] 50 63 63 80 100 125

Available ratio

RV 1 : 6 (4 : 24) 1 : 7 (4 : 28) 1 : 7 (4 : 28) 1 : 8 (4 : 32) 1 : 8 (4 : 32) 3 : 32

RN 1 : 18 (2 : 36) 1 : 14 (2 : 28) 1 : 14 (2 : 28) 1 : 24 1 : 24 1 : 16 (2 : 32)

RL 1 : 24 1 : 28 1 : 28 1 : 32 1 : 32 1 : 32


Ratio

RV4 4 4 5.14 6 6 6

RN4 1.33 2 2.57 2 2 4

RL4 1 1 1.29 1.5 1.5 2


RV4 0.40 0.40 0.37 0.39 0.37 0.35

RN4 0.30 0.32 0.31 0.27 0.26 0.31

RL4 0.26 0.24 0.23 0.25 0.24 0.24


Ratio

RV4 0.60 0.61 0.60 0.62 0.61 0.60

RN4 0.52 0.54 0.54 0.52 0.51 0.57

RL4 0.47 0.47 0.47 0.49 0.48 0.50


Ratio

RV4 41 81 177 245 513 960

RN4 18 51 107 117 244 709

RL4 16 34 71 97 201 467


Ratio

RV4 1.9 3.9 3.9 4.5 7.2 12.3

RN4 1.2 2.8 2.8 4.2 6.5 11.5

RL4 1 2.1 2.1 3.7 6.3 11


149 363 765 1 190 2 510 6 000

Gear box material fusione in ghisa sferoidale EN-GJS-500-7 (UNI EN 1563)

Mass of screw jack without acme screw [kg] 13 26 26 48 75 145

Mass for every 100 mm of acme screw [kg] 0.45 0.8 1.6 1.8 2.5 5.2



(1) - efficiency figures at different input speed on page 36(2) - THERMAL limit, referred to work with max. duty cycle 40 % over 10 min time period (30 % over 1 hour time period) at 25C environment temperature

32

MA 50 50 kN 35 kN 25 kN 10 kN


RV4 RN4 RL4T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 200 100 50 20.7 6.49 11.9 3.74 26.1 8.21 14.8 4.63 8.5 2.67 10.5 3.28 5.9 1.85 3.4 1.071 500 100 50 25 55.6 8.73 32.2 5.05 19.1 2.99 38.9 6.11 22.5 3.53 13.4 2.09 27.8 4.36 16.1 2.52 9.5 1.50 11.1 1.75 6.5 1.01 3.8 0.601 000 66.7 33.3 16.7 58.2 6.09 33.8 3.54 20.4 2.14 40.7 4.26 23.7 2.48 14.3 1.50 29.1 3.05 16.9 1.77 10.2 1.07 11.7 1.22 6.8 0.71 4.1 0.43

750 50 25 12.5 59.4 4.66 35.4 2.78 21.1 1.65 41.6 3.26 24.8 1.95 14.8 1.16 29.7 2.33 17.7 1.39 10.5 0.83 11.9 0.93 7.1 0.56 4.2 0.33500 33.3 16.7 8.3 62.0 3.25 36.6 1.91 22.3 1.16 43.4 2.27 25.6 1.34 15.6 0.81 31.0 1.62 18.3 0.96 11.1 0.58 12.4 0.65 7.3 0.38 4.5 0.23300 20 10 5 65.2 2.05 38.5 1.21 24.2 0.76 45.6 1.43 27.0 0.85 16.9 0.53 32.6 1.02 19.3 0.60 12.1 0.38 13.1 0.41 7.7 0.24 4.9 0.15100 6.7 3.3 1.7 69.5 0.73 42.8 0.45 27.6 0.29 48.7 0.51 29.9 0.31 19.9 0.20 34.8 0.36 21.4 0.22 13.8 0.14 13.9 0.15 8.6 0.09 5.5 0.06

MA 80 80 kN 60 kN 40 kN 20 kN


RV4 RN4 RL4T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 257 129 64.3 27.3 8.57 15.3 4.79 8.8 2.741 500 129 64.3 32.1 29.3 4.60 58.8 9.23 32.7 5.14 19.6 3.07 29.4 4.62 16.4 2.57 9.8 1.531 000 85.7 42.9 21.4 42.4 4.44 92.0 9.63 52.1 5.45 31.8 3.33 61.3 6.42 34.7 3.64 21.2 2.22 30.7 3.21 17.4 1.82 10.6 1.11

750 64.3 32.1 16.1 126 9.84 73.0 5.73 44.0 3.46 94.0 7.38 54.7 4.30 33.0 2.59 62.7 4.92 36.5 2.86 22.0 1.73 31.3 2.46 18.3 1.43 11.0 0.86500 42.9 21.4 10.7 131 6.84 76.0 3.98 46.1 2.41 98.0 5.13 57.0 2.98 34.6 1.81 65.3 3.42 38.0 1.99 23.0 1.21 32.7 1.71 19.0 0.99 11.5 0.60300 25.7 12.9 6.4 141 4.41 79.9 2.51 50.1 1.57 106 3.31 59.9 1.88 37.6 1.18 70.2 2.20 39.9 1.25 25.0 0.79 35.1 1.10 20.0 0.63 12.5 0.39100 4.3 4.3 2.1 152 1.58 89.6 0.94 57.0 0.60 114 1.19 67.2 0.70 42.8 0.45 75.6 0.79 44.8 0.47 28.5 0.30 37.8 0.40 22.4 0.23 14.3 0.15

MA 25 25 kN 20 kN 15 kN 10 kN


RV4 RN4 RL4T1

NmP1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

T1 Nm

P1 kW

3 000 200 66.7 50 8.2 2.58 6.7 2.11 6.16 1.94 5.1 1.58 10.7 3.34 4.1 1.29 3.4 1.051 500 100 33.3 25 28.3 4.44 11.4 1.78 9.3 1.46 22.7 3.56 9.1 1.42 7.5 1.17 17.0 2.67 6.80 1.07 5.6 0.88 11.3 1.78 4.6 0.71 3.7 0.581 000 66.7 22.2 16.7 29.3 3.06 11.9 1.24 9.7 1.02 23.4 2.45 9.5 1.00 7.8 0.81 17.6 1.84 7.13 0.75 5.8 0.61 11.7 1.23 4.8 0.50 3.9 0.41

750 50 16.7 12.5 30.0 2.35 12.3 0.96 10.1 0.79 24.0 1.88 9.8 0.77 8.1 0.63 18.0 1.41 7.34 0.58 6.0 0.47 12.0 0.94 4.9 0.38 4.0 0.32500 33.3 11.1 8.3 31.6 1.65 12.9 0.67 10.7 0.56 25.3 1.32 10.3 0.54 8.6 0.45 19.0 0.99 7.70 0.40 6.5 0.34 12.6 0.66 5.2 0.27 4.3 0.22300 20 6.7 5 32.8 1.03 13.5 0.42 11.4 0.36 26.3 0.82 10.8 0.34 9.2 0.29 19.7 0.62 8.10 0.25 6.9 0.22 13.1 0.41 5.4 0.17 4.6 0.14100 6.7 2.2 1.7 35.6 0.37 15.2 0.16 13.1 0.14 28.5 0.30 12.2 0.13 10.5 0.11 21.4 0.22 9.12 0.10 7.9 0.08 14.3 0.15 6.1 0.06 5.3 0.05

2

LOAD

n1 [rpm]



LOAD

n1 [rpm]



LOAD

n1 [rpm]







servomech acme screw jacks

Documents